arya raj. plant tissues
DESCRIPTION
PLANT TISSUESTRANSCRIPT
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KERALA UNIVERSITY
COLLEGE OF TEACHER
EDUCATION
NEDUMANGAD
2013-2014ARYA RAJ J
NATURAL SCIENCE
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PLANT TISSUES
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SIMPLE
TISSUES
COMPLEX
TISSUES
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SIMPLE TISSUESIt is a type of permanent tissue. Which is
made up of one type of cells. It is homogenous nature. These are classified into
*Parenchyma
*Collenchyma
*Sclerenchyma
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PARENCHYMA
• It is a living thin walled
simple permanent tissue.
• Parenchyma cells are
isodiametric and oval in shape.
• The cells is made up of
cellulose.
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FUNCTIONS OF PARENCHYMA
• It store the food materials.
• It give rigidity to the plant body
based on the
turgidity condition of the cell.
• In fleshy stem of parenchyma
cells store water.
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PARENCHYMA
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COLLENCHYMA• It is a living thick-walled
simple permanent tissue.
• it is closely related to
parenchyma.
• The parenchyma cells has
a thickening. These
Thickening usually occurs
at the corners or angles
of the cells.
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FUNCTIONS OF
COLLENCHYMA• It give mechanical support to the
plant organ.
• It help the plant to the bending and streching caused by wind.
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CO
LLEN
CH
YM
A
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SCLERENCHYMA• It is a dead thick
walled simple permanent tissue.
• It is composed of elongated or non-elongated cells which lack protoplasm.
• The cells walls are lignified and pitted.
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FUNCTIONS OF
SCLERENCHYMA• It give mechanical support to the plant
body.
• It protect the plant from various strains and stresses of environmental forces.
• Fibres of fruits and seeds help in their dispersal by wind.
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COMPLEX TISSUES• It is a type of
permanent tissue, which is composed of different types of cells.
• It is homogenous nature.
• Xylem and phloem are complex tissues found in vascular plants.
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XYLEM• Xylem is a complex
conductive tissue,
conducting water and minerals elements from the root to other part of the plant.
• It also serves as mechanical tissue.
• Xylem is otherwise called wood.
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XYLEM
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PHLOEM• Phloem is a complex
conductive tissueconducting prepared food materials from the region of their synthesis to all other part of the plant.
• Phloem is otherwise called bast.
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PH
LO
EM
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